Rite of Marduk Slain and Risen
The vizier makes contact with another Assamite. The beneficiary names a victim she intends to diablerize. The sorcerer then takes part in a group ceremony with at least three other participants who know the ritual. Donning the robe and mask, he ritually enacts the myth of Marduk, taking the part of that god. The other participants alternately take the parts of Marduk's mother, Ea; his consort, Sarpanitu, and the chaos dragon, Tiamat. Tiamat "kills" Marduk, but Marduk "resurrects" himself and "slays" her, symbolically making her into the body of the world. Once this has been enacted, the primary ritualist must unflinchingly suffer a hard blow to the face from each of the other participants. The appearance of blood-tears in the ritualist's eyes signals the ritual's success.
If the beneficiary succeeds in diablerizing her specified target before the next sunrise, the victim's sire, all the sire's childer, all of the target's childer, and any vampire in the blood bond with the victim share his final sensations as he perishes. Each of the loses one blood point and three Willpower points, which go to the killer (though the character may not exceed her Trait maximums). If the killer's blood pool is full, the remainder goes to the vizier. Furthermore, all of these collateral targets suffer an effect that lasts until the passing of 13 inauspicious nights: they lose one Willpower for every 10 minutes they spend in the presence of the beneficiary or the vizier, as they suffer flashbacks to the original victim's demise.